Theybuiltahighway_______themountains.
A、leadintoD
leading into 的逻辑主语是 highway ，它们之间是主动的关系，所以用动名词形式。句意：他们修建了一条通往山里的公路
The wounded soldiers would recover quickly if they were well ________.
They built a highway _______ the mountains.
On average about ￡5000 a year is spent on each private school pupil,_______ the amount spent on state school pupils.
To a worker, ________ from the point of view of society is necessary labor is from his own point of view voluntary play.
The French maintain a ________ separation of personal and professional life.
